MultiBoot USB
This is a collection of GRUB scripts that allows to create a bootable pendrive (USB dongle, flash stick) supporting a number of different OS images. Simply copy ISO files under `/iso-imgs`. Both UEFI and Legacy BIOS boot modes can be enabled simultaneously.
Grml is a bootable CD (live CD) based on Debian GNU/Linux. It includes a collection of GNU/Linux software especially for users of text tools and system administrators. It also provides automatic hardware detection. Grml can be used as a rescue system, for analysing systems and networks, or as a working environment. Due to on-the-fly decompression, Grml includes about 2 GB of software and documentation on the CD.